CN105399261B - A kind of processing method of low concentration electroplating cyanic waste water - Google Patents
A kind of processing method of low concentration electroplating cyanic waste water Download PDFInfo
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- CN105399261B CN105399261B CN201510920590.4A CN201510920590A CN105399261B CN 105399261 B CN105399261 B CN 105399261B CN 201510920590 A CN201510920590 A CN 201510920590A CN 105399261 B CN105399261 B CN 105399261B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 55
- 238000009713 electroplating Methods 0.000 title claims abstract description 41
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 8
- 231100000719 pollutant Toxicity 0.000 claims abstract description 8
- 239000011591 potassium Substances 0.000 claims abstract description 8
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 8
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000010792 warming Methods 0.000 claims description 18
- 238000005273 aeration Methods 0.000 claims description 9
- 150000005686 dimethyl carbonates Chemical class 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical class OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 21
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003054 catalyst Substances 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 4
- 229910021529 ammonia Inorganic materials 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000007800 oxidant agent Substances 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- DPZFPPWWSNNMPI-UHFFFAOYSA-N [S]C=C Chemical compound [S]C=C DPZFPPWWSNNMPI-UHFFFAOYSA-N 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000001569 carbon dioxide Substances 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- -1 octadecyl ester Chemical class 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 230000003851 biochemical process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OQVYMXCRDHDTTH-UHFFFAOYSA-N 4-(diethoxyphosphorylmethyl)-2-[4-(diethoxyphosphorylmethyl)pyridin-2-yl]pyridine Chemical compound CCOP(=O)(OCC)CC1=CC=NC(C=2N=CC=C(CP(=O)(OCC)OCC)C=2)=C1 OQVYMXCRDHDTTH-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- FSAJWMJJORKPKS-UHFFFAOYSA-N octadecyl prop-2-enoate Chemical class CCCCCCCCCCCCCCCCCCOC(=O)C=C FSAJWMJJORKPKS-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to a kind of processing method of low concentration electroplating cyanic waste water, belong to technical field of waste water processing.The present invention is first filtered low concentration electroplating cyanic waste water, remove particulate pollutant, high-temperature process is being carried out to it, cryanide ion is reduced into ammonia, is then adding the mixtures such as dimethyl carbonate, vinyl sulphur thereto again, stir, and to its add catalyst potassium permanganate hybrid reaction after, then to its add oxidant potassium perborate so that an ammonia part becomes nitrogen, another part becomes carbon dioxide, and finally it is aerated.Beneficial effects of the present invention：The low concentration electroplating cyanic waste water total cyanide content of the processing of the present invention is down to 0.1~0.4mg/L by 0.5~100mg/L, and treatment effeciency is high, and secondary pollution, environmental protection will not be produced in processing procedure.
Description
Technical field
The present invention relates to a kind of processing method of low concentration electroplating cyanic waste water, belong to technical field of waste water processing.
Background technology
Cyanide wastewater refers to the waste water containing various cyanides.In the industrial production, the wet underwater welding of gold and silver, chemical fibre
Production, coking, synthesis ammonia, plating, the industry such as Gas Production can be directed to use with cyanide or by-product cyanide, thus in life
Production process can discharge a number of cyanide wastewater, but because industry is different different with more particularly to technique, each cyanide wastewater
There is very big difference between composition and content.
] the conventional processing method of cyanide wastewater has：Alkaline chlorination process, pressurizing hydrolysis, electrolysis, biochemical process,
Sulfur dioxide cup air oxidation process, hydrogen peroxide oxidation process, natural purification method, acidifying absorption method etc., these processing methods to containing
There is the problem of application is upper in cyanogen wastewater treatment, as having secondary pollution release, influence factor in long processing period, processing procedure
It is more to cause treatment effect unstable and cyanide removes halfway situation.Wet Catalytic Oxidation Method is in wet air oxidation
Grow up on the basis of method.The processing method that catalyst is added in wet air oxidation is referred to as catalytic wet oxidation
Method, abbreviation CWO methods.Wet Catalytic Oxidation Method refers under high temperature (200~280 DEG C), high pressure (2~8MPa), with oxygen rich gas
Or oxygen is catalyst, using the catalytic action of catalyst, accelerates useless respiratory reaction between Organic substance in water and oxidant, make to give up
Organic matter in water and it is oxidized to CO containing poisonous substances such as N, S2、N2、SO2、H2O, reach the purpose of purification.
To the various industrial organic waste waters of high chemical oxygen content or the compound that can not be degraded containing biochemical process, it is no longer necessary to enter
Row post processing, only through single treatment i.e. up to discharge standard.But the investment of this method is huge, processing time length, Hen Duoqi
Industry, factory are reluctant to mean that this spends great amount of cost.
The content of the invention
Present invention mainly solves technical problem：For two can be produced in the chemical treatment method processing of current cyanide wastewater
It is secondary pollution and it is bad for the cyanide wastewater treatment effect of low concentration, handle halfway problem, there is provided a kind of low concentration
The processing method of electroplating cyanic waste water, the present invention are first filtered low concentration electroplating cyanic waste water, remove particulate pollutant,
High-temperature process is being carried out to it, cryanide ion is reduced into ammonia, it is mixed then to add dimethyl carbonate, vinyl sulphur etc. thereto again
Compound, stir, and to its add catalyst potassium permanganate hybrid reaction after, then to its add oxidant potassium perborate, make
Obtain an ammonia part and become nitrogen, another part becomes carbon dioxide, finally it is aerated.The processing of the present invention
Low concentration electroplating cyanic waste water total cyanide content is down to 0.1~0.4mg/L by 0.5~100mg/L, and treatment effeciency is high, is locating
Secondary pollution, environmental protection will not be produced during reason.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention：
(1) by the low concentration electroplating cyanic waste water of required processing by grid filtration, after removing bulky grain solid pollutant,
It is 7.0~8.0 that the sodium hydroxide solution for being 30% with mass fraction, which adjusts its pH, then is introduced into processing pond, and it is entered
Row heated sealed, and temperature programming is carried out with 5 DEG C/min, while stirred in heating, wait to be warming up to 180~200 DEG C, stop adding
Heat, after being incubated 1~2h, it is set to naturally cool to room temperature；
(2) count in parts by weight, by 30~50 parts of dimethyl carbonates, 30~45 parts of vinyl sulfonic acids, 20~25 parts of propylene
After sour octadecyl ester is stirred mixing, adds into the above-mentioned waste water for being cooled to room temperature, it is stirred, control the mixing speed to be
200~300r/min, time are 30~45min；
(3) after the completion of to be mixed, potassium permanganate, the amount of addition and the mass ratio of low concentration electroplating cyanic waste water are added to it
For 100:1, and it is heated, temperature is set as 70~80 DEG C, and the time is 1~2h, is heating simultaneously to stir it
Mix, make the reaction of mixing turbid uniform；
(4) after the completion for the treatment of above-mentioned heating stirring, the boron excessively that low concentration electroplating cyanic waste water quality is 1~3% is added to it
Sour potassium, it is stirred after being warming up to 90~100 DEG C, stop heating, be incubated 30~40min, then it is stirred and is warming up to 110~
120 DEG C, after being incubated 15~20min, it is set to naturally cool to room temperature；
(5) Air Exposure then is carried out to above-mentioned treated low concentration electroplating cyanic waste water, every 10~15min to its
It is filled with air once, inflates 3~5 times altogether, after aeration terminates, it is filtered again, removes its sediment, you can complete
The processing of paired low concentration electroplating cyanic waste water.
The beneficial effects of the invention are as follows：
(1) the low concentration electroplating cyanic waste water total cyanide content of processing is down to 0.1~0.4mg/ by 0.5~100mg/L
L, treatment effeciency are high；
(2) secondary pollution, environmental protection will not be produced in processing procedure；
(3) preparation process is simple, and cost is low.
Embodiment
The low concentration electroplating cyanic waste water of required processing is removed into bulky grain solid pollutant by grid filtration first
Afterwards, it is 7.0~8.0 that the sodium hydroxide solution for being 30% with mass fraction, which adjusts its pH, then is introduced into processing pond, to it
Heated sealed is carried out, and temperature programming is carried out with 5 DEG C/min, while is stirred in heating, waits to be warming up to 180~200 DEG C, stops
Heating, after being incubated 1~2h, it is set to naturally cool to room temperature；Count in parts by weight, by 30~50 parts of dimethyl carbonates, 30~45
Part vinyl sulfonic acid, after 20~25 parts of octadecyl acrylates are stirred mixing, is added into the above-mentioned waste water for being cooled to room temperature,
It is stirred, it is 200~300r/min to control mixing speed, and the time is 30~45min；It is high to its addition after the completion of to be mixed
Potassium manganate, the amount of addition are 100 with the mass ratio of low concentration electroplating cyanic waste water:1, and it is heated, temperature is set as
70~80 DEG C, the time is 1~2h, is heating simultaneously to be stirred it, is making the reaction of mixing turbid uniform；Treat that above-mentioned heating is stirred
After the completion of mixing, the potassium perborate that low concentration electroplating cyanic waste water quality is 1~3% is added to it, it is stirred and is warming up to 90~
After 100 DEG C, stop heating, be incubated 30~40min, then it is stirred and is warming up to 110~120 DEG C, after being incubated 15~20min, make
It naturally cools to room temperature；Then Air Exposure is carried out to above-mentioned treated low concentration electroplating cyanic waste water, every 10~
15min is filled with air to it once, inflates 3~5 times altogether, after aeration terminates, it is filtered again, removes its precipitation
Thing, you can complete the processing to low concentration electroplating cyanic waste water.
Example 1
The low concentration electroplating cyanic waste water of required processing is removed into bulky grain solid pollutant by grid filtration first
Afterwards, it is 8.0 that the sodium hydroxide solution for being 30% with mass fraction, which adjusts its pH, then is introduced into processing pond, and it is carried out
Heated sealed, and temperature programming is carried out with 5 DEG C/min, while stirred in heating, wait to be warming up to 200 DEG C, stop heating, insulation
After 2h, it is set to naturally cool to room temperature；Count in parts by weight, by 50 parts of dimethyl carbonates, 30 parts of vinyl sulfonic acids, 20 parts of propylene
After sour octadecyl ester is stirred mixing, adds into the above-mentioned waste water for being cooled to room temperature, it is stirred, control the mixing speed to be
200r/min, time 30min；After the completion of to be mixed, potassium permanganate is added to it, the amount of addition is electroplated with low concentration gives up containing cyanogen
The mass ratio of water is 100:1, and it is heated, temperature is set as 80 DEG C, time 2h, and it is carried out while heating
Stirring, make the reaction of mixing turbid uniform；After the completion for the treatment of above-mentioned heating stirring, adding low concentration electroplating cyanic waste water quality to it is
3% potassium perborate, it is stirred after being warming up to 100 DEG C, stops heating, be incubated 40min, then it is stirred and is warming up to 120 DEG C,
After being incubated 20min, it is set to naturally cool to room temperature；Then above-mentioned treated low concentration electroplating cyanic waste water is carried out at aeration
Reason, air is filled with once every 15min to it, is inflated 5 times altogether, after aeration terminates, it is filtered again, removes it
Sediment, you can complete the processing to low concentration electroplating cyanic waste water.The low concentration electroplating cyanic waste water of the processing of the present invention is total
Cyanide content is down to 0.4mg/L by 100mg/L, and treatment effeciency is high, and secondary pollution, protection ring will not be produced in processing procedure
Border.
Example 2
The low concentration electroplating cyanic waste water of required processing is removed into bulky grain solid pollutant by grid filtration first
Afterwards, it is 7.0 that the sodium hydroxide solution for being 30% with mass fraction, which adjusts its pH, then is introduced into processing pond, and it is carried out
Heated sealed, and temperature programming is carried out with 5 DEG C/min, while stirred in heating, wait to be warming up to 180 DEG C, stop heating, insulation
After 1h, it is set to naturally cool to room temperature；Count in parts by weight, by 30 parts of dimethyl carbonates, 45 parts of vinyl sulfonic acids, 25 parts of propylene
After sour octadecyl ester is stirred mixing, adds into the above-mentioned waste water for being cooled to room temperature, it is stirred, control the mixing speed to be
200r/min, time 30min；After the completion of to be mixed, potassium permanganate is added to it, the amount of addition is electroplated with low concentration gives up containing cyanogen
The mass ratio of water is 100:1, and it is heated, temperature is set as 70 DEG C, time 1h, is heating simultaneously to carry out it
Stirring, make the reaction of mixing turbid uniform；After the completion for the treatment of above-mentioned heating stirring, adding low concentration electroplating cyanic waste water quality to it is
1% potassium perborate, it is stirred after being warming up to 90 DEG C, stops heating, be incubated 30min, then it is stirred and is warming up to 110 DEG C,
After being incubated 15min, it is set to naturally cool to room temperature；Then above-mentioned treated low concentration electroplating cyanic waste water is carried out at aeration
Reason, air is filled with once every 10min to it, is inflated 3 times altogether, after aeration terminates, it is filtered again, removes it
Sediment, you can complete the processing to low concentration electroplating cyanic waste water.The low concentration electroplating cyanic waste water of the processing of the present invention is total
Cyanide content is down to 0.1mg/L by 0.5mg/L, and treatment effeciency is high, and secondary pollution, protection ring will not be produced in processing procedure
Border.
Example 3
The low concentration electroplating cyanic waste water of required processing is removed into bulky grain solid pollutant by grid filtration first
Afterwards, it is 7.5 that the sodium hydroxide solution for being 30% with mass fraction, which adjusts its pH, then is introduced into processing pond, and it is carried out
Heated sealed, and temperature programming is carried out with 5 DEG C/min, while stirred in heating, wait to be warming up to 190 DEG C, stop heating, insulation
After 1h, it is set to naturally cool to room temperature；Count in parts by weight, by 40 parts of dimethyl carbonates, 40 parts of vinyl sulfonic acids, 20 parts of propylene
After sour octadecyl ester is stirred mixing, adds into the above-mentioned waste water for being cooled to room temperature, it is stirred, control the mixing speed to be
250r/min, time 40min；After the completion of to be mixed, potassium permanganate is added to it, the amount of addition is electroplated with low concentration gives up containing cyanogen
The mass ratio of water is 100:1, and it is heated, temperature is set as 75 DEG C, time 1h, is heating simultaneously to carry out it
Stirring, make the reaction of mixing turbid uniform；After the completion for the treatment of above-mentioned heating stirring, adding low concentration electroplating cyanic waste water quality to it is
2% potassium perborate, it is stirred after being warming up to 95 DEG C, stops heating, be incubated 35min, then it is stirred and is warming up to 115 DEG C,
After being incubated 17min, it is set to naturally cool to room temperature；Then above-mentioned treated low concentration electroplating cyanic waste water is carried out at aeration
Reason, air is filled with once every 12min to it, is inflated 4 times altogether, after aeration terminates, it is filtered again, removes it
Sediment, you can complete the processing to low concentration electroplating cyanic waste water.The low concentration electroplating cyanic waste water of the processing of the present invention is total
Cyanide content is down to 0.1mg/L by 0.7mg/L, and treatment effeciency is high, and secondary pollution, protection ring will not be produced in processing procedure
Border.
Claims (1)
1. a kind of processing method of low concentration electroplating cyanic waste water, it is characterised in that specifically preparation process is：
(1) the low concentration electroplating cyanic waste water of required processing after removing bulky grain solid pollutant, is used into matter by grid filtration
It is 7.0~8.0 that the sodium hydroxide solution that amount fraction is 30%, which adjusts its pH, then is introduced into processing pond, it is carried out close
Envelope heating, and temperature programming is carried out with 5 DEG C/min, while stirred in heating, wait to be warming up to 180~200 DEG C, stop heating,
After being incubated 1~2h, it is set to naturally cool to room temperature；
(2) count in parts by weight, by 30~50 parts of dimethyl carbonates, 30~45 parts of vinyl sulfonic acids, 20~25 parts of acrylic acid ten
After octaester is stirred mixing, adds into the above-mentioned waste water for being cooled to room temperature, it stirred, control mixing speed for 200~
300r/min, time are 30~45min；
(3) after the completion of to be mixed, potassium permanganate is added to it, the amount and the mass ratio of low concentration electroplating cyanic waste water of addition are
100:1, and it is heated, temperature is set as 70~80 DEG C, and the time is 1~2h, and it is stirred while heating,
Make the reaction of mixing turbid uniform；
(4) after the completion for the treatment of above-mentioned heating stirring, the potassium perborate that low concentration electroplating cyanic waste water quality is 1~3% is added to it,
It is stirred after being warming up to 90~100 DEG C, stops heating, be incubated 30~40min, then it is stirred and is warming up to 110~120 DEG C,
After being incubated 15~20min, it is set to naturally cool to room temperature；
(5) Air Exposure then is carried out to above-mentioned treated low concentration electroplating cyanic waste water, be filled with every 10~15min to it
Air once, is inflated 3~5 times, after aeration terminates, it is filtered again, removes its sediment altogether, you can completion pair
The processing of low concentration electroplating cyanic waste water.
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